EXAIR’s Super Air Knife Removes Moisture From Plastic Bottles Prior to Labeling

EXAIR’s Super Air Knife is THE best solution for compressed air blowoff operations that require a wide sheet of compressed air. We’ve been manufacturing Air Knives for over 35 years, with the Super Air Knife making its first appearance back in 1997. Since then, the Super Air Knife has undergone a few enhancements over the years as we’re constantly trying to not only introduce new products but also improve on the ones we have. We’ve added new materials, longer single piece knives, as well as additional accessories. But, by and large, the basic design has remained the same. As the saying goes: “If it ain’t broke, don’t fix it!”.

The Super Air Knife utilizes a source of compressed air to create a laminar sheet of high velocity air. This supplied compressed air mixes with ambient air that is entrained into the primary airstream. The Super Air Knife entrains ambient air at a rate of 40:1, making it VERY effective in a variety of drying, cleaning, and cooling applications. Available in lengths ranging from 3”-108” and in a variety of different materials of construction, there’s a Super Air Knife available for just about any application.

Any time you have product moving along a conveyor that needs to be cleaned, dried, or cooled off, a Super Air Knife is the ideal fit. I recently worked with our Argentinian Distributor on an application involving drying off plastic bottles just prior to applying a label to the outside. After the bottles are molded, they go through a washing operation to remove contaminants from the inside and outside of the bottles before they’re filled. After filling, a label must be applied to the outside of the bottle. Before installation of the Super Air Knives, they were allowing the bottles to air dry. As they moved along the conveyor, most of the residual water did come off and wasn’t causing any issues.

SAK and Mounting System

They were looking to increase production rates so that they could keep up with demand, however when they increased the speed of the conveyor there was still a good amount of residual water remaining on the bottles. This prevents the label from adhering properly to the outside of the bottle. Not only did this result in an added step to inspect the bottles, but those that weren’t labeled properly had to have the label removed and cleaned off before a new one could be put on. This actually ended up being less productive than just running the conveyor at a slower speed.

They came across the EXAIR Super Air Knife and decided to try (2) 110036 aluminum Super Air Knives to remove excess moisture just prior to labeling. The plant handles a wide variety of different sized bottles, so they also utilized the Universal Mounting System so that they could easily adjust the positioning of the knife based on the job. With the Super Air Knives in place, they were able to effectively run the operation nearly 20% faster without any problems.

With the quiet and efficient Super Air Knives in place, they were able to increase production rates in order to fulfill their orders on time. If there’s an application in your facility that could necessitate the use of an EXAIR Super Air Knife, give us a call. With 16 different lengths available from stock in 4 different materials, same day shipping with orders placed by 3:00 ET, AND our unconditional 30 day guarantee, there’s no excuse not to give one a try!

Tyler Daniel
Application Engineer
E-mail: TylerDaniel@exair.com
Twitter: @EXAIR_TD

Non-Contact Wiping with the Super Air Knife

A glove manufacturer needed to decrease the reject rate with their natural rubber gloves. They were seeing brush marks in the rubber material which was a visual defect.  Their operation used a ceramic hand that was used to form the size of the glove.  After the rubber material was applied, it was dipped into water to set the material.  It would come out of the water tank, and a mechanism on the conveyor would rotate the hands to “shake” off the excess water.  It would then go over brushes to wipe the water from in between the fingers.  Much of the water had to be removed before it entered into the coagulation tank because it would affect the stretching ability of the glove.  With their current operation, they were seeing the scuff marks from the brushes which was a visual defect.  This cost them down time and product rejects.  So, they contacted EXAIR to see if we could help.

Brushes used to wipe the gloves
Brushes used to wipe the gloves

In looking at their process, they had two conveyors running side by side with each other. This made it a bit more difficult as we could only work on one side.  Being that the ceramic hand rotated around twice in 36” before hitting the brushes, I could focus in this area.  When it comes to wiping products without touching it, air is required.  And EXAIR knows how to use compressed air very efficiently, safely, and effectively.  For this application, I suggested our model 110236 Super Air Knife kit.  It has an overall length of 36” which could span the target area.  It comes with a filter, regulator, and shim set to clean and control the air flow.  It would be able to “wipe” the water off the hands like a non-contact squeegee.  The air flow from the Super Air Knife will hug the exterior portion of the hand; removing the water from the surface and in between the fingers.  They removed the brushes and did not have to worry about brush marks on the glove.

EXAIR Super Air Knife
EXAIR Super Air Knife

If you require a non-contact wiping in your application, use EXAIR Intelligent Compressed Products to accomplish this. You will not have to keep replacing items that wear or use items that cause damage to your product. EXAIR has the ability to use compressed air to create a strong force without scraping or scratching your material.

John Ball
Application Engineer
Email: johnball@exair.com
Twitter: @EXAIR_jb